🧩 词语组成解析
sir
[sɝ]
n. 先生;（用于姓名前）爵士;（中小学生对男教师的称呼）先生;老师;
n. 弗雷德里克（男子名）
n. 阿什顿（人名）
🗣️ 情景例句
You haven't been around much lately.
最近你在家的时候不多。
That was close!
好险！
When the instrument is situated at more than 700 miles from the earthquake centre,
如果把这种仪器安装在距震源700多英里远的地方，